Hinge



(No Model.) 2 Sheets-Sheet 1.

R. G. PARK. HINGE.

No. 605,509. Patented June 14,1898.

WITNESSES livmwz'oze (No Model.) 2Sheets--'Sheet2.

R. G. PARK.

HINGE.

No. 605,509. Patented June 14, 1898.

A TTOHNE Y.

NITED STATES RICHARD G. PARK, OF VEST CHESTER, PENNSYLVANIA.

'HINGE.

SPECIFICATION forming part of Letters Patent No. 605,509, dated June 14, 1898.

Application filed October 12, 1897. Serial No. 654,946. (No model.)

To aZZ whom it may concern:

Be it known that I, RICHARD G. PARK, a

, citizen of the United States, residing at West hanging oval or round windows to the concave portion of the window-frame, and in consequence such windows have been pivoted to swing on their horizontal or vertical axes through or crosswise of the frame, preventing the use of movable screens and being otherwise objectionable, chiefly in that they are difficult to fasten. and keep tight, unwieldy, and have to be removed in order to clean the same upon the outside.

The object of my invention is to provide a hinge adapted for hanging elliptical, round, oval, or irregularly-shaped windows, doors, or blinds to the concave portion of the window or door frame.

In the accompanying drawings, forming a part of this specification, I have shown my invention applied to an oval window.

Figure 1 is a front elevation of a portion of an oval window and window-frame in dotted lines, showing my hinge applied and the window closed. Fig. 2 is atop view of the hinge detached with the leaves open. Fig. 3 is an end elevation looking in the direction of the arrow, Fig. 2. Fig. 4 is an end elevation of the hinge with the leaves closed. Fig.5 is a top view of the hinge with the leaves closed.

Referring more particularly to the drawings, A denotes the leaves of the hinge, pro vided with inwardly-extending arms B, having knuckles 0 formed thereon.

D denotes the pin.

E denotes the sash, and F the Windowframe.

The leaves of the hinge are concavo-convex in form. The convex surface of one leafis adapted to be countersunk into the concave register with those of its mate.

surface of the window-frame, and the concave surface of the other leaf is adapted to be countersunk into the convex side of the sash. The arms of each leaf are formed with atwist, as shown in the drawings, yet the knuckles in each leaf range in a perpendicular line and Said arms when extended show the twist in opposite directions relatively to each other, as shown in Figs. 2 and 3. This twist in the arms allows the leaves and arms to fold closely or abut, as shown in Fig. 4, and serves also to present the knuckles of each arm in the same vertical plane to those of its mate, as shown in Figs. 2, 3, and 4. This construction prevents the knucklesbinding and admits a straight pin to register with the pin holes in the knuckles. It will be seen the pin-holes of each knuckle register in a right line, which is tangential to the curve of said leaves.

As shown in Fig. 1, I use two hinges, one above and one below the dotted line 0 d, which represents an imaginary line crossing horizontally midwaythe height of the window at the center or at the greatest width of the oval. The hinges are arranged at equal" distances from this centersay about six inches; but this distance may be varied to suit the curve of theoval provided the knuckles of the upper or lower hinge are kept in the same vertical plane. The arms of the lower hinge are twisted in the same manner and to the same degree as those of the upper hinge; but the twist in each arm is in the opposite direction to that of the corresponding arm of the upper hinge. By this means and byplacing the hinges at equal distances above and below the center, as above mentioned, I am enabled to keep the knuckles of the two hinges in the same vertical plane, as shown by the dotted linesa b. The length of the arms may be varied to suit the trim of the" window-frame or depth of molding on its face. Again, the arms proper may be omitted and the leaves provided with offsets or made wide enough to allow for the requisite twist being Ice hinges, as this degree may be varied when it is desired to place the hinges at greater or shorter distances from the central line 0 d.

I What I claim, and desireto secure by Letters Patent, is-

curved Window frame and sash, or doors and blinds, having curved leaves provided with 10 twisted arms or offsets, said arms or offsets having knuckles the pin-holes of which register in a right line which is tangential to the curve of said leaves.

In testimony whereof I affix my signature in presence of two witnesses.

RICHARD e. PARK.

Witnesses:

H. F. Wvnns J os. T. MURTAGH. 

